> > As said above, I do not see CF8 access as a workaround. I expect my> > system to work in the same way also if MMCONFIG is not available.>> It should boot sure, but exotic stuff not working is not a major issue

It is not only about booting the system without MMCONFIG, it is alsoabout using the system. For this PCI ECS CF8 access is needed. So whynot adding support for this? Excluding major parts of CPU registerswhen using CF8 base access only will cause writing code to workaroundthis. Not very nice to handle.